... oscilloscope, signal generator, function generator, frequency counter, bench top meter, spectrum analyzer ... low-ohm meter, capacitance meter. on-line UPS, off-line UPS, interactive UPS, EPS, sine wave inverter.YB1602 YB1605 YB1610 YB1615 YB1620 · Digital Frequency counter · Linear/Log Sweep Frequency ... display (including 3 digits for voltage)Frequency and width displayed simultaneouslyOutput waveforms: ...